DELAWARE VALLEY ORNITHOLOGICAL CLUB. 



33 



Nov. 12, 1909. State Line to Wilmington. 

 Trolley, 1-5-3-4-2-3 



May 14, 1910. State Line to York'lyn. Walk, 

 3-2 



Oct. 29, 1910. Springs to Newport. Walk, 

 1-1-3-2-2-4-3-2-5-2-3 . . . . . 



May 27, 1911. Henderson to Clayton. From 

 car window. Seen 76 birds, add 10 per cent. 

 for heavier timbered country. (Both sides of 

 car were observed, but opposite side only in 

 part.) Equals about 



November 30, 1912. Newport. Walk, 1-2-4. 



Dec. 30, 1912. Brenford to Kehoboth. From 

 car window. To Dover, 8.2 miles, 8-20-5-1-1- 

 1-2-2-1-3-2-2-1-1-1-4-6:= 61. Dover to Har- 

 rington, 16.7 miles, 2-5-2-4-2-3-1-3-3-1-2-1-3- 

 1-1-1-1-5-2-5-2-3-2-1 = 56. To Rehoboth, 

 43.6 miles, 2-1-] -2-1-4-1-1-1-2-1-1-2-2-1-2-3-1- 

 1-2-1-1-2-1-2-1-1-3-1-1-1-1-1-1-1-7-12-1-1-5-1- 

 1-1-1-1-1-1-1-1-1 = 87. Total of 204. Add 8 

 per cent., say 16. 91 observations . . . 



Number of trips 22 

 Average .... 



84 



7 



220 



16.6 

 1 



68.5 



22 





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JO 



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18 



9 



5 



1 



28 



3 



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66.9 



9.3 



3.2 



98.4 

 4.47 



It is to be noted that the observations off the cars average 6. 1 

 while from a car window the average is only 2.53 which would 

 indicate that many birds are missed on hurried trips, as might 

 be expected. Taking the average of all of these Records we 

 have 4. 47. It is probable that such a method in counting would 

 not embrace over 50 to 60 per cent of the entire Vulture popu- 



